US20230158697A1 - Electrode Cutting Device and Electrode Manufacturing Apparatus Including the Same - Google Patents

Electrode Cutting Device and Electrode Manufacturing Apparatus Including the Same Download PDF

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Publication number
US20230158697A1
US20230158697A1 US17/917,417 US202217917417A US2023158697A1 US 20230158697 A1 US20230158697 A1 US 20230158697A1 US 202217917417 A US202217917417 A US 202217917417A US 2023158697 A1 US2023158697 A1 US 2023158697A1
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Prior art keywords
electrode
cutting device
cutter
electrode sheet
gripper
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Pending
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US17/917,417
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English (en)
Inventor
Nam Young Kim
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LG Energy Solution Ltd
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LG Energy Solution Ltd
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Assigned to LG ENERGY SOLUTION, LTD. reassignment LG ENERGY SOLUTION, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, NAM YOUNG
Publication of US20230158697A1 publication Critical patent/US20230158697A1/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/22—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member and work feed mechanically connected
    • B26D5/24—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member and work feed mechanically connected including a metering device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/04—Means for moving the cutting member into its operative position for cutting by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H01M50/406—Moulding; Embossing; Cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to an electrode cutting device and an electrode manufacturing apparatus including the same. More particularly, the present invention relates to an electrode cutting device capable of monitoring a gripper configured to fix an electrode sheet, thereby preventing poor electrode cutting, and an electrode manufacturing apparatus including the same.
  • the lithium secondary battery With acceleration in capacity increase and energy density improvement of a lithium secondary battery, the lithium secondary battery has been used as an energy source for medium and large devices, such as a vehicle or a power storage system, as well as small devices, such as a portable electronic device.
  • the lithium secondary battery may be manufactured using a method of receiving an electrode assembly, configured to have a structure in which a positive electrode, a separator, and a negative electrode are sequentially stacked, in a battery case and hermetically sealing the battery case.
  • the electrode assembly includes a single-cell configured to have a structure in which a first electrode and a separator are stacked, a mono-cell configured to have a structure in which a first electrode, a separator, and a second electrode are stacked, and a bi-cell configured to have a structure in which a first electrode, a separator, a second electrode, a separator, and a third electrode are stacked.
  • Each of the electrodes constituting the electrode assembly is manufactured by applying an electrode mixture to one surface or opposite surfaces of a thin electrode sheet made of copper, aluminum, or nickel, drying the same, pressing the same, and cutting the electrode sheet into a unit electrode.
  • a positive electrode and a negative electrode, each of which is the unit electrode thus manufactured, are stacked and laminated in the state in which a separator is interposed therebetween, whereby a unit cell is manufactured.
  • the positive electrode and the negative electrode are not cut so as to have uniform sizes in a process of cutting the electrode sheet into the unit electrode, peripheries of the positive electrode and the negative electrode stacked in the state in which the separator is interposed therebetween may not be parallel to each other.
  • Such poor cutting may occur when air leaks from a cylinder that drives a gripper configured to fix the electrode sheet, whereby pressing force of the gripper is reduced.
  • a method of checking air leakage through worker’s touch was used.
  • This method increases dead time during a battery manufacturing process, whereby yield is reduced.
  • Patent Document 1 discloses an electrode cutting device configured to form an electrode tab, wherein the electrode cutting device includes a first cutting unit and a second cutting unit configured to move while crossing each other in order to cut a tab formation portion.
  • Patent Document 1 discloses that the first cutting unit disposed under the tab formation portion moves upwards, a stripper disposed above the tab formation portion moves downwards so as to come into tight contact with an upper surface of the tab formation portion, and the second cutting unit moves downwards, wherein the cutting units cross each other to form an electrode tab, but does not disclose technology for adjusting the force of the stripper that fixes the electrode tab.
  • Patent Document 1 Korean Registered Patent Publication No. 1751008 (2017.06.20)
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide an electrode cutting device capable of stably fixing an electrode sheet such that electrodes stacked in a lamination process are aligned with each other and an electrode manufacturing apparatus including the same.
  • An electrode cutting device configured to accomplish the above object includes a cutting unit configured to cut an electrode sheet and a fixing unit configured to fix the electrode sheet, wherein the cutting unit includes a cutter configured to cut the electrode sheet by shearing and a cutter lifting portion configured to move the cutter so as to be perpendicular to a surface of the electrode sheet, and the fixing unit includes a gripper configured to press the electrode sheet so as to be fixed, a driving portion configured to drive the gripper so as to be moved, and a sensor configured to monitor the driving portion
  • the cutter may be configured to have a double-edged structure in which the height of the cutter is gradually increased from the middle to opposite ends thereof in a lateral direction.
  • the cutter may include an upper cutter located above the electrode sheet and a lower cutter located under the electrode sheet, the lower cutter being configured to cut the electrode sheet while crossing the upper cutter moved downwards.
  • the driving portion may be driven by a cylinder.
  • the width of the gripper may be greater than the width of the electrode sheet.
  • a protrusion may be formed on a pressing surface of the gripper.
  • a rubber coating layer may be added to the pressing surface of the gripper.
  • the senor may be a pneumatic gauge sensor, and the sensor may continuously or periodically monitor the pressure of the cylinder.
  • the sensor may be detachably attached to the driving portion.
  • the present invention provides an electrode manufacturing apparatus including the electrode cutting device.
  • the electrode manufacturing apparatus includes the electrode cutting device, a separator supply unit configured to supply a separator, on which a cut positive electrode and a cut negative electrode will be disposed, a lamination device configured to laminate the positive electrode and the negative electrode attached to the separator, a separator cutting unit configured to cut the separator of the laminated stack, and an inspection unit configured to inspect alignment of a unit cell, and the electrode cutting device includes a positive electrode cutting device and a negative electrode cutting device.
  • the pressure of the driving portion may be checked using the sensor of the positive electrode cutting device and the sensor of the negative electrode cutting device.
  • the present invention may provide various combinations of the above solving means.
  • an electrode cutting device includes a sensor capable of monitoring the pressure of a cylinder, which is a means that drives a gripper configured to fix an electrode sheet, and therefore it is possible to check whether air leaks from the cylinder without worker intervention.
  • anti-slip treatment is performed on a lower surface of the gripper that is brought into contact with the electrode sheet, whereby it is possible to increase fixing force of the electrode sheet.
  • FIG. 1 is a side view of an electrode cutting device according to the present invention.
  • FIG. 2 is a perspective view of the electrode cutting device.
  • FIG. 3 is a side view sequentially showing a process of cutting an electrode using a cutter including an upper cutter and a lower cutter.
  • FIG. 4 is a perspective view of the cutter.
  • FIG. 5 is a perspective view of a gripper.
  • FIG. 6 is a schematic view of an electrode manufacturing apparatus.
  • FIG. 1 is a side view of an electrode cutting device according to the present invention
  • FIG. 2 is a perspective view of the electrode cutting device.
  • an electrode sheet 310 is transferred to an upper surface of a support portion 320 , and the electrode sheet 310 is fixed by a fixing unit 200 , whereby transfer of the electrode sheet is stopped. In this state, the electrode sheet 310 is cut by a cutting unit 100 , whereby an electrode 311 is discharged.
  • Electrodes 311 are disposed on a separator 330 so as to be spaced apart from each other.
  • the electrode cutting device includes a cutting unit 100 configured to cut an electrode sheet 310 and a fixing unit 200 configured to fix the electrode sheet 310 .
  • the cutting unit 100 includes a cutter 110 configured to cut the electrode sheet 310 by shearing while being moved downwards so as to be perpendicular to the electrode sheet and a cutter lifting portion 120 configured to move the cutter 110 so as to be perpendicular to a surface of the electrode sheet 310 .
  • the fixing unit 200 includes a gripper 210 configured to press the electrode sheet 310 so as to be fixed, a driving portion 220 configured to drive the gripper 210 so as to be moved, and a sensor 230 configured to monitor the driving portion 220 .
  • the gripper 210 is moved upwards and downwards so as to be perpendicular to the electrode sheet 310 . That is, when the gripper is moved downwards, the electrode sheet 310 is fixed onto the support portion 320 , and when the gripper 210 is moved upwards, the fixed state of the electrode sheet 310 is released, and the electrode sheet 310 is transferred.
  • the gripper may be moved upwards and downwards, and at the same time or subsequently may be moved forwards and rearwards in a direction parallel to a transfer direction M of the electrode sheet.
  • the driving portion 220 is driven by a cylinder, and the gripper may be driven by increasing or decreasing the air pressure of the cylinder.
  • the cutter lifting portion 120 may be driven by increasing or decreasing the air pressure of the cylinder.
  • the sensor 230 may be a pneumatic gauge sensor, and the sensor 230 may continuously monitor the pressure of the cylinder. Alternatively, measurement time may be set such that the sensor 230 can periodically monitor the pressure of the cylinder.
  • the cutting unit and the fixing unit are disposed so as to be adjacent to each other, or are integrally assembled with each other. Air may leak from the cylinder due to vibration generated from the cutting unit, whereby the air pressure of the cylinder may be reduced. In this case, the force of the fixing unit applied to the electrode sheet may be lower than a predetermined value, whereby the electrode sheet may not be stably fixed, and therefore the electrode sheet may move in the movement direction thereof.
  • the cutting unit cuts the electrode sheet in this state, poor cutting, in which deviation occurs in length of the electrode sheet in the transfer direction M thereof, may occur. As a result, misalignment between electrodes may occur when the electrodes are stacked so as to be laminated.
  • poorly cut electrodes may be continuously manufactured as long as the electrode cutting device is not stopped, whereby yield may be reduced.
  • the sensor 230 configured to measure the air pressure of the driving portion 220 may be attached to the driving portion 220 , whereby it is possible to rapidly and accurately detect whether the air pressure of the driving portion is changed.
  • the width a1 of the gripper 210 may be greater than the width a2 of the electrode sheet in order to secure stability in fixing the electrode sheet 310 .
  • the driving portion 220 is added to each of opposite ends of the gripper 230 in a lateral direction so as to evenly press the gripper.
  • the senor 230 may be detachably attached to the driving portion 220 , and it is possible to check whether a large number of driving portions are defective using a single sensor.
  • FIG. 3 is a side view sequentially showing a process of cutting an electrode using the cutter, which includes an upper cutter and a lower cutter.
  • FIG. 3 a process of cutting the electrode sheet 310 using the electrode cutting device, which includes the cutting unit 100 and the fixing unit 200 including the sensor 230 , is shown.
  • the cutter 110 shown in FIG. 3 includes an upper cutter 111 located above the electrode sheet 310 and a lower cutter 112 located under the electrode sheet 310 , the lower cutter being configured to cut the electrode sheet 310 while crossing the upper cutter 111 moved downwards and to discharge an electrode 311 .
  • the distance between the upper cutter 111 and the lower cutter 112 is approximately 0.
  • the left surface of the upper cutter 111 and the right surface of the lower cutter 112 are slid relative thereto, whereby the electrode sheet 310 is cut.
  • FIG. 4 is a perspective view of the cutter.
  • the cutter 110 which is used as an upper cutter, is configured to have a double-edged structure in which the height H of the cutter is gradually increased from the middle to opposite ends thereof in a lateral direction W.
  • the double-edged structure is used in order to increase cutting force.
  • FIG. 5 is a perspective view of the gripper.
  • the gripper 210 performs a function of stably fixing the electrode sheet.
  • a protrusion 240 may be formed on a pressing surface of the gripper that is brought into tight contact with the electrode sheet.
  • a rubber coating layer 250 may be formed on the pressing surface of the gripper.
  • FIG. 6 is a schematic view of an electrode manufacturing apparatus.
  • the electrode manufacturing apparatus includes a positive electrode cutting device 400 configured to cut a positive electrode sheet in order to discharge a positive electrode, a negative electrode cutting device 500 configured to cut a negative electrode sheet in order to discharge a negative electrode, a separator supply unit 600 configured to supply a separator 330 , on which the cut positive electrode 315 and the cut negative electrode 316 will be disposed, a lamination device 700 configured to laminate the positive electrode and the negative electrode attached to the separator, a separator cutting unit 800 configured to cut the separator of the laminated stack, and an inspection unit 900 configured to inspect alignment of a unit cell 350 .
  • the positive electrode cutting device 400 and the negative electrode cutting device 500 include sensors 430 and 530 configured to monitor the pressure of grippers 410 and 510 , respectively.
  • the pressure of the driving portion may be checked using the sensor 430 of the positive electrode cutting device 400 and the sensor 530 of the negative electrode cutting device 500 .
  • an electrode manufacturing process may be immediately interrupted in order to stop production of defective electrodes.
  • the sensor configured to monitor the pressure of the cylinder, which drives the gripper, is included such that the electrode sheet is cut in the state in which the electrode sheet is stably fixed, whereby it is possible to rapidly and accurately check whether defective electrodes are produced without worker intervention.
  • an electrode cutting device includes a sensor capable of monitoring the pressure of a cylinder, which is a means that drives a gripper configured to fix an electrode sheet, and therefore it is possible to check whether air leaks from the cylinder without worker intervention.
  • anti-slip treatment is performed on a lower surface of the gripper that is brought into contact with the electrode sheet, whereby it is possible to increase fixing force of the electrode sheet.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Battery Electrode And Active Subsutance (AREA)
US17/917,417 2021-01-29 2022-01-27 Electrode Cutting Device and Electrode Manufacturing Apparatus Including the Same Pending US20230158697A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2021-0013007 2021-01-29
KR1020210013007A KR20220109692A (ko) 2021-01-29 2021-01-29 전극 커팅 장치 및 이를 포함하는 전극 제조장치
PCT/KR2022/001422 WO2022164209A1 (ko) 2021-01-29 2022-01-27 전극 커팅 장치 및 이를 포함하는 전극 제조장치

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EP (1) EP4120413A1 (zh)
KR (1) KR20220109692A (zh)
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DE4228650A1 (de) * 1992-08-28 1994-03-03 Wolfgang Mohr Verfahren und Vorrichtung zum Optimieren der Schnittandeutung bei einer Schneidemaschine
KR101032701B1 (ko) * 2009-07-02 2011-05-09 (주)에이치엔티 전지 충방전용 그립퍼
JP2016055322A (ja) * 2014-09-10 2016-04-21 株式会社豊田自動織機 プレス装置
KR101751008B1 (ko) 2015-01-07 2017-06-26 주식회사 엘지화학 전극 탭의 형성을 위한 전극 커팅 장치
KR101963739B1 (ko) * 2017-11-07 2019-03-29 (주)피토 적층형 2차전지의 분리막 마감장치
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CN113785425B (zh) * 2019-05-13 2024-05-10 株式会社Lg新能源 制造电极组件的方法、通过该方法制造的电极组件、和二次电池

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CN115398692A (zh) 2022-11-25
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WO2022164209A1 (ko) 2022-08-04

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